Wave Breaking Induced Surface Wakes and Jets Observed during a Bora Event
Abstract
An observational and modeling study of a bora event that occurred during the field phase of the Mesoscale Alpine Programme is presented. Research aircraft in-situ measurements and airborne remote-sensing observations indicate the presence of strong low-level wave breaking and alternating surface wakes and jets along the Croatian coastline over the Adriatic Sea. The observed features are well captured by a high-resolution COAMPS simulation. Analysis of the observations and modeling results indicate that the long-extending wakes above the boundary layer are induced by dissipation associated with the low-level wave breaking, which locally tends to accelerate the boundary layer flow beneath the breaking. Farther downstream of the high peaks, a hydraulic jump occurs in the boundary layer, which creates surface wakes. Downstream of lowerterrain (passes), the boundary layer flow stays strong, resembling supercritical flow. Citation: Jiang, Q., and J. D. Doyle (2005), Wave breaking induced surface wakes and jets observed during a bora event.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2005
- Accession Number
- ADA513642
Entities
People
- James D. Doyle
- Qingfang Jiang
Organizations
- University Corporation for Atmospheric Research